RE: [CAD_CAM_EDM_DRO] Re: Small taps and dies

Hi Andrey

Sintering, I think is when it's made of a powder that is compressed and
fused by heat, like bronze filters, and alloy pulleys.

I wasn't aware you could do that with taps and drills, never thought they
would have enough tensile strength.

Learn something new everyday, I'll have to look it up and see what can be
done, normally I get fine things EDM eroded for a job, but that's not cheap.



Thanks Mark



Dr. Mark Vaughan Ph'D. B.Eng. M0VAU

Managing Director

Vaughan Industries Ltd, reg in UK no 2561068

Water Care Technology Ltd, reg in UK no 4129351

Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
Phone/Fax 44 1872 561288

RSGB DRM111(Cornwall)

_____

From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Andrey Lipavsky
Sent: 19 August 2007 02:45
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: RE: [CAD_CAM_EDM_DRO] Re: Small taps and dies



Mark,
From what I understand, a lot of the small stuff is now sintered, not
machined. Evidently sintering technology has gotten to a point where
extreme accuracy is attainable.

Thanks,
Andrey Lipavsky
Essex Jewelers
490 E. McMillan St.
Studio 205
Cincinnati, OH 45206
(513) 826-0240
www.essexjewelers.com

-----Original Message-----
From: CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
DRO@yahoogroups.com] On Behalf Of Mark Vaughan
Sent: Saturday, August 18, 2007 11:40 AM
To: CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
DRO@yahoogroups.com
Subject: RE: [CAD_CAM_EDM_DRO] Re: Small taps and dies

For fine drills, in the UK many of the model dealers have a little red
plastic box of wire drills, I think they go down to 10 thou.

You could also look to printed circuit board drills, 0.3mm is the smallest
mot like to go, but via sizes go much smaller so drills must be available.
Most commercial PCB drills are however carbide so very fragile, since they
brake easily, but they drill very true which is good for precision work, the
wire drills often wander a bit, they are very sensitive on feed pressure.

I'm amazed sometimes at the fine pitch on some of these fine taps, is it a
rough straight flute drill, oh heck it's a tap, be interested to know how
they make them that fine, like watch makers screws. Think I'll stick to
clocks.

Regs Mark.

Dr. Mark Vaughan Ph'D. B.Eng. M0VAU

Managing Director

Vaughan Industries Ltd, reg in UK no 2561068

Water Care Technology Ltd, reg in UK no 4129351

Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
Phone/Fax 44 1872 561288

RSGB DRM111(Cornwall)

_____

From: CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
DRO@yahoogroups.com] On Behalf Of Peter Rosenholm
Sent: 18 August 2007 02:40
To: CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] Re: Small taps and dies

at an auction 20 years ago I bid on a cabimate with different tools onside.
There was a bow full of small drills. From the smallest up tp 3/32" . Each
little packet had a dozen drills per. The guy who one the auction asked me
what I wanted out of the cabinet and I told him the box of small drills. He
asked me if I'd give him 25$ dollars for them, I said no problem. That $25
saved me thousands over the years. There were also tiny taps. I've looked in
the box of drills and they aren't there. I don't know if they went when I
sold the company, but I will look. I should be able to help with the tap
drills anyway. I mainly used ~.025" for vacume forming molds. I have the
other sizes smaller and larger. tell me what you need, and I'll look for the
taps.
Peter Rosenholm

Michael Fagan <woodworker88@ <mailto:woodworker88%40gmail.com> gmail.com>
wrote:
Ooh, miniature work. Model work makes perfect sense.

On 8/17/07, Mike <ezme@rogers. <mailto:ezme%40rogers.com> com> wrote:
>
> Why use 000-120 or 0000-160. I routinely use 00-90 nuts and bolts
> which I make to fit wherever I am using them. I like to make models
> that reflect the prototype as best as can be done, nut and bolt detail
> is essential to this end. Making the nuts and bolts allows me to make
> the head any size to fit the scale, within the limits of the diameter
> of the thread. Even in 1/2" scale there is a need for nut head detail
> down to 0.010 across the flats, one might ask what's the point it's
> not visible to the naked eye, that's true but I like to photograph the
> finished items and that's where the rub comes in. Do a close up and
> right away any liberties taken with the detail show up big time. I've
> reached the lower limit of what a 00-90 will allow as regards
> dimension across the flats of a hexhead.
>
> --- In CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
DRO@yahoogroups. <mailto:DRO%40yahoogroups.com> com
<CAD_CAM_EDM_DRO%40yahoogroups.com>,
> "Michael Fagan"
> <woodworker88@...> wrote:
> >
> > Just out of curiosity, what do you plan to use them for? I've seen a
> > 000-120 once in a machine shop supply house but never since. I assume
> > they're used in watches and precision electronics, mostly?
> >
> > On 8/17/07, Mike <ezme@...> wrote:
> > >
> > > Any one have a good source for small taps and dies? I'm looking for
> > > 0000-160, 000-120. I have looked in Grobet catalogue but find out that
> > > many of their offerings are now discontinued. Several other sources
> > > will sell taps but no mention of dies. I would entertain going into
> > > metric sizes. Any help much appreciated.
> > >
> > > Mike
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
>

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